EP 4177240 A4 20240522 - PRODUCT 1,3-BUTYLENE GLYCOL
Title (en)
PRODUCT 1,3-BUTYLENE GLYCOL
Title (de)
PRODUKT VON 1,3-BUTYLENGLYKOL
Title (fr)
PRODUIT 1,3-BUTYLÈNE GLYCOL
Publication
Application
Priority
- JP 2021084070 A 20210518
- JP 2022020607 W 20220518
Abstract (en)
[origin: EP4177240A1] A product 1,3-butylene glycol, in which 2,4-dinitrophenylhydrazine derivatives of 2-(hydroxyethyl)-2,6-dimethyl-1,3-dioxane have a weight proportion of 90 ppm or less, as calculated from a sum of absorbance of peaks thereof in an HPLC analysis under specific conditions after specific sample preparation.
IPC 8 full level
C07C 29/80 (2006.01); C07C 29/86 (2006.01); C07C 29/88 (2006.01); C07C 31/20 (2006.01)
CPC (source: EP KR US)
C07C 29/09 (2013.01 - US); C07C 29/74 (2013.01 - KR US); C07C 29/80 (2013.01 - EP US); C07C 29/84 (2013.01 - US); C07C 29/86 (2013.01 - EP US); C07C 29/88 (2013.01 - EP); C07C 31/20 (2013.01 - KR); C07C 31/207 (2013.01 - EP US)
C-Set (source: EP US)
EP
US
Citation (search report)
- [E] EP 4083009 A1 20221102 - DAICEL CORP [JP]
- [X] WO 2021045148 A1 20210311 - DAICEL CORP [JP]
- [X] JP 2003252811 A 20030910 - KYOWA YUKA KK
- [X] CN 108383684 A 20180810 - SUZHOU RES INSTITUTE OF LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
- See also references of WO 2022244791A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4177240 A1 20230510; EP 4177240 A4 20240522; CN 116323533 A 20230623; CN 116323533 B 20240730; JP 2022177654 A 20221201; JP 7079874 B1 20220602; KR 102550111 B1 20230629; KR 20230021153 A 20230213; TW 202313538 A 20230401; US 12091379 B2 20240917; US 2023227389 A1 20230720; WO 2022244791 A1 20221124
DOCDB simple family (application)
EP 22804702 A 20220518; CN 202280006633 A 20220518; JP 2021084070 A 20210518; JP 2022020607 W 20220518; KR 20237002794 A 20220518; TW 111118464 A 20220518; US 202218018752 A 20220518